B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/28
B23B 51/04 (2006.01) B23D 27/04 (2006.01)
Patent
CA 1117322
ABSTRACT A generally portable sheet material cutting tool comprising apparatus having a substantially stationary sleeve member with a free end and a cutting tool reciprocable within the sleeve member, the cutting tool having both a transverse cutting edge formed along its length cooperable with the free end of the sleeve member and an initial hole forming means extending beyond the free end of the sleeve member. The reciproc- ation of the cutting tool is effected by cam means acting in response to rotary motion supplied by a hand held drill unit or by a rotary drive motor, the cam means being capable of being disengaged by axial pressure applied to the initial hole forming means. In one form of the apparatus the transverse cutting edge is given both a reciprocating and a rotating component of motion, and in a modified form of the apparatus the transverse cutting edge is restrained for reciprocating movement only. -1a-
332003
Hewson Donald E.
Mcpherson's Limited
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